diff --git a/configure.ac b/configure.ac
index b66a73a..23a768b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -125,7 +125,7 @@ else
 fi
 AC_SUBST(WARNINGFLAGS_C)
 
-PKG_CHECK_MODULES(GLIB, [glib-2.0 >= 2.6.0])
+PKG_CHECK_MODULES(GLIB, [glib-2.0 >= 2.21.5])
 AC_SUBST(GLIB_CFLAGS)
 AC_SUBST(GLIB_LIBS)